Calcined Tincal Borate Concentrate from Mexico
Heat-treated tincal (natural borax) concentrate for soldering fluxes and heat-resistant alloys. HTS 2528.00.0005 includes calcined forms of natural sodium borates from solid mineral deposits. Provides essential boron for metallurgical processes.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Certify calcination to remove volatiles; comply with REACH for boron compounds
• Avoid container condensation with desiccants